Alloy.



ed an Improvement in Alloys,

- ran starts en rant ,ottttfim JAMES CHUBCHWARD,

OF LAKEVILLE, CONNECTICUT.

Patented Apr. 2, rats.

ALLOY.

1,261,742. I Specification of Letters Eatent.

No Drawing.

To all whom it may concern:

Be it known that I, JAMns CHURCHWARD, a citizen of the United States, and a resident of Lakeville, in the county of Litchfield and State of Connecticut, have inventof which the following is a specificatlon.

This invention relates to steel alloiys, that is, alloys in which iron is a prepon crating constituent element.

One of the objects thereof is to provide an alloy of the above type in which certain desirable physical properties are attained in a high degree. Another object is to provide an alloy of the above nature which may be readily manufactured and the cost of which is not excessive. Other objects will be in part obvious and in part pointe out hereinafter.

An alloy which bodiment of my invention may be made in the following manner :Steel or iron with a suitable proportion of manganese is melted in the furnace or crucible together with nickel and molybdenum and the charge heated to a high temperature. The metal should be teemed at a high temperature of not less than 2650 Fahrenheit and a suitable proportion of vanadium preferably finely crushed, should be added to the metal'in the trough or even in the ladle. This vanadium has, it is believed, a cleansing action with regard to certain of the objectionable gases and it also attains other advantageous results. V

The proportions should preferably lows I Nickel from about 1% to 5%, Molybdenum from about 25% to 3%, Vanadium from about .15% to about Manganese under .70%. An alloy of this nature is valuable for either war material or commercial use, such as automobile frames, gears and the like. It

of the above ingredients be substantially as folforms an illustrative em- Application filed December 19, 1917. Serial No. 207,821.

is to be understood that although the above described method of making the same is preferable, nevertheless the resultant alloy may perhaps be formed by other methods. This alloy steel will be found to present a high degree of toughness and at the same time is strong and hard.

It is also to be understood that in this alloy the chief constituent is iron with the incidental elements usually found therewith to form steel.

It is further though I have in an open hearth furnace, factured in. electric furnaces, the like.

I claim as my invention 1. A steel alloy containing nickel, molybdenum, vanadium and manganese.

2. A steel alloy containing vanadium and other constituents in. about the following proportions: Nickel from about 1% to about 5%, molybdenum 5%, manganese under 1%.

3. A steel alloy containing constituents in about the following proportions: Nickel from about 1% to about 5%, molybdenum from about 25% to about 3%, vanadium from a trace toabout 50%, manganese under 1%.

i. A steel alloy containing constituents in about the following proportions: Nickel from about 1% to about 5%, molybdenum from about 25% to about 3%, vanadium from about .15% to 50%, manganese under to be understood that, aldescribed this alloyas made crucibles and Dec, 1917. 7 AMES CHURCHWARD.

it may be manufrom about 25%to about 

